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WO2010126068A1 - Dispositif de réception, procédé de réception et programme - Google Patents

Dispositif de réception, procédé de réception et programme Download PDF

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Publication number
WO2010126068A1
WO2010126068A1 PCT/JP2010/057513 JP2010057513W WO2010126068A1 WO 2010126068 A1 WO2010126068 A1 WO 2010126068A1 JP 2010057513 W JP2010057513 W JP 2010057513W WO 2010126068 A1 WO2010126068 A1 WO 2010126068A1
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WIPO (PCT)
Prior art keywords
protocol data
error
data unit
pdu
layer
Prior art date
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Ceased
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PCT/JP2010/057513
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English (en)
Japanese (ja)
Inventor
小松雅弘
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NEC Corp
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NEC Corp
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Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to US13/262,958 priority Critical patent/US8503478B2/en
Priority to JP2011511424A priority patent/JP5648631B2/ja
Priority to CN201080018762.4A priority patent/CN102415133B/zh
Publication of WO2010126068A1 publication Critical patent/WO2010126068A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1835—Buffer management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • the present invention relates to a receiving device, a receiving method, and a program.
  • FIG. 6 is a block diagram for explaining a general configuration of a radio access network in a mobile communication system of LTE (Long Term Evolution).
  • a radio access network (E-UTRAN (Evolved Universal Terrestrial RAN)) in an LTE mobile communication system includes a mobile station UE (User Equipment) and a radio base station eNB (E-UTRAN NodeB). Communication is performed between the mobile station UE and the radio base station eNB via a radio link (RL (Radio Link)).
  • E-UTRAN Evolved Universal Terrestrial RAN
  • RL Radio Link
  • Each of the mobile station UE and the radio base station eNB includes a PDCP (Packet Data Convergence Protocol) sublayer, an RLC (Radio Link Control) sublayer, a MAC (Medium Access Control) sublayer, and a physical (PHY (Physical)) layer.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • PHY Physical
  • a MAC SDU (Service Data Unit) transmitting unit 101 in the MAC sublayer transmits a MAC SDU to an error PDU (Protocol Data Unit) discarding unit 102 in the RLC sublayer.
  • the error PDU discard unit 102 receives the MAC SDU transmitted from the MAC SDU transmission unit 101 as an RLC PDU.
  • the error PDU discard unit 102 discards the RLC PDU having an error, and transmits the RLC PDU without the error to the received data storage processing unit 103.
  • the received data storage processing unit 103 stores an error-free RLC PDU in the reception buffer and performs an order correction process for correcting the order of the RLC PDU stored in the reception buffer.
  • Patent Document 1 discloses a technique for restoring a MAC-d SDU from a MAC-d PDU received from a lower layer in the receiving end MAC-d sub-layer and processing the MAC-d SDU as an RLC PDU in the RLC layer. Is described.
  • FIG. 8 is a diagram showing a general MAC PDU. As understood from FIG. 8, RLC PDUs of a plurality of RBs are multiplexed (also expressed as storage) in the MAC PDU. If there is an error in the RLC PDU of a given RB, it is very likely that there is an error in the RLC PDUs of other RBs stored in the same MAC PDU.
  • an RLC SDU is constructed using abnormal data that is an RLC PDU with an error.
  • the RLC PDU has an RLC control PDU that is control information used in the RLC. If the RLC control PDU includes abnormal data, the RLC operation is abnormal. May occur, and normal RLC processing may not be performed. In addition, it is necessary to improve the accuracy of discriminating RLC PDUs with errors. Therefore, the present invention provides a receiving apparatus, a receiving method, and a program that can solve the above-described problem, that is, can more reliably discard erroneous data and receive correct data more reliably. With the goal.
  • a receiving apparatus stores a plurality of first protocol data units of a first layer provided for each of a plurality of radio bearers, and a lower layer of the first layer
  • a receiving device that receives data using the second protocol data unit of the second layer, and in the second layer, specific information for specifying the second protocol data unit is designated as second protocol data. If there is an error in the first protocol data unit given to the first protocol data unit stored in the unit and the predetermined first protocol data unit in the first layer, refer to the specific information and The other first protocol data unit stored in the second protocol data unit storing one protocol data unit Discarding has a discarding means.
  • the reception method of the present invention stores a plurality of first protocol data units of a first layer provided for each of a plurality of radio bearers, and a second layer of a second layer that is a lower layer of the first layer.
  • the first protocol data unit having the error is stored by referring to the specific information.
  • the other first protocol data unit stored in the protocol data unit 2 is discarded.
  • the program of the present invention stores a plurality of first protocol data units of a first layer provided for each of a plurality of radio bearers, and a second layer of a second layer which is a lower layer of the first layer.
  • Specific information specifying the second protocol data unit in the second layer is stored in the second protocol data unit in the computer of the receiving device that receives data using the two protocol data units. If there is an error in the predetermined first protocol data unit in the first layer and the process to be given to the first protocol data unit, the first information in error is referred to by referring to the specific information
  • the other protocol data unit stored in the second protocol data unit was stored in the second protocol data unit. And discarding Lot Col data unit, thereby to execute.
  • FIG. 1 is a diagram illustrating a protocol structure of a radio access network in an LTE mobile communication system in relation to the first embodiment of the present invention.
  • FIG. It is a block diagram which shows the structural example of the receiver which concerns on the 1st Embodiment of this invention. It is a figure which shows the example of a format of RLC PDU of 1st Embodiment.
  • 3 is a flowchart for explaining an operation example (reception process) of the reception apparatus shown in FIG. 2. It is a block diagram which shows the structural example of the receiver which concerns on the 2nd Embodiment of this invention. It is a block diagram explaining the general structure of the radio
  • FIG. 7 is a block diagram illustrating a general configuration of a receiving device in the mobile communication system shown in FIG. 6. It is a figure which shows a general MAC PDU.
  • FIG. 1 is a diagram showing a protocol structure of a radio access network in an LTE mobile communication system in relation to the first embodiment of the present invention.
  • LTE is the European Telecommunications Standards Institute (ETSI), the Japan Radio Industry Association / Information Communications Technology Committee (Association of Radio Industries and Business Technologies / Telecommunity Testry / Telecommunity Telecommunications) Proposed by a project called Third Generation Partnership Project (3GPP), which is composed of the Korea Information Technology Association (TTA), etc. Is a standard that has been.
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • the radio access network includes a mobile station UE (User Equipment) and a radio base station eNB (E-UTRAN NodeB).
  • the protocol of the radio access network includes an RRC (Radio Resource Control) layer, a PDCP (Packet Data Convergence Protocol) sublayer, an RLC (Radio Link Control) sublayer, an MAC (Medium Access Control) sublayer, and a PH (physical control layer). Can be classified.
  • the PDCP sublayer, the RLC sublayer, and the MAC sublayer constitute a data link layer.
  • the protocol of the radio access network can be divided into a user plane for transmitting data data and a control plane for transmitting control information (Signaling).
  • the physical (PHY) layer provides an information transfer service to an upper layer using a physical channel.
  • Data moves between a physical (PHY) layer and an upper MAC sublayer through a transport channel.
  • Data moves between physical (PHY) layers on the transmission side and the reception side through a physical channel.
  • the MAC sublayer is connected to an RLC sublayer, which is an upper layer, via a logical channel. In the MAC sublayer, mapping between a logical channel and a transmission channel is performed, and assignment of MAC parameters for radio resource allocation and reallocation is performed.
  • the RLC sublayer is intended to support reliable data transfer.
  • the RLC sublayer is provided for each radio bearer.
  • a plurality of RLC SDUs are segmented or concatenated. Packet compression or decompression is performed in the PDCP sublayer.
  • basic operations such as call admission control and handover are controlled.
  • FIG. 2 is a block diagram showing a configuration example of the receiving apparatus according to the first embodiment of the present invention.
  • the receiving device indicates the mobile station UE when the radio base station eNB is a transmitting device, and indicates the radio base station eNB when the mobile station UE is a transmitting device.
  • a MAC PDU information transmission unit 11 and a MAC SDU transmission unit 12 are provided in the MAC sublayer of the reception apparatus.
  • an error PDU discard unit 13, a received data storage processing unit 14, and an SDU reconstruction unit 15 are provided.
  • the MAC PDU information transmission unit 11 generates an ID (Identification) for identifying the MAC PDU and an SN (Serial Number) indicating the order received in the MAC sublayer, and transmits the generated ID and SN to the MAC SDU transmission unit 12 .
  • the MAC SDU transmission unit 12 multiplexes (adds) the ID and SN transmitted from the MAC PDU information transmission unit 11 to the MAC SDU, and the MAC SDU in which the ID and SN are multiplexed (provided). Transmit to RLC sublayer.
  • multiplexing of ID and SN to MAC SDU is sufficient if MAC SDU is associated with ID and SN. That is, the multiplexing of the ID and SN into the MAC SDU is not limited to storing the ID and SN as data in the MAC SDU. It involves associating with an SDU.
  • the error PDU discard unit 13 discards an RLC PDU having an error out of RLC PDUs transmitted from the MAC sublayer, and is an ID that is multiplexed on the RLC PDU having an error and identifies the MAC PDU Is notified to the other error PDU discarding unit 13 of the other RLC sublayer that is processing another radio bearer.
  • an error PDU discarding unit 13 when an error PDU discarding unit 13 is notified of an ID for identifying a MAC PDU from another error PDU discarding unit 13 of another RLC sublayer that is processing another radio bearer, the notified ID is multiplexed. Check if there are any RLC PDUs made. When there is an RLC PDU in which the notified ID is multiplexed, the error PDU discard unit 13 discards the RLC PDU in which the notified ID is multiplexed. In addition, the error PDU discard unit 13 determines whether or not the relationship between the SN indicating the reception order in the MAC sublayer and the SN included in the RLC header of the RLC PDU is appropriate.
  • the error PDU discarding unit 13 determines that the RLC PDU is an RLC PDU having an error and discards the ID, and the ID multiplexed in the discarded RLC PDU is set to another RLC PDU. Notify other error PDU discard unit 13 of the sublayer.
  • error detection will be described in detail.
  • a case where the radio base station eNB is a receiving device that is, a case where the radio base station eNB receives an uplink signal from the mobile station UE will be described as an example.
  • the radio base station eNB In the MAC sublayer of the radio base station eNB, an uplink signal transmission request is notified to the mobile station UE by a downlink signal.
  • the mobile station UE transmits an uplink signal based on the signal.
  • the radio base station eNB receives one MAC PDU from the mobile station UE, and the MAC PDU includes one or a plurality of radio bearer MAC SDUs.
  • the order of MAC PDUs received by HARQ (Hybrid Automatic Repeat request) retransmission processing may not be the original order.
  • HARQ retransmission process a retransmission pattern is determined in consideration that all data with errors on the receiving side is decoded without being discarded and combined with the retransmission data.
  • the MAC PDU information transmission unit 11 generates an ID for identifying the mobile station UE and a MAC reception SN indicating the order received in the MAC sublayer in order to give a unique ID to each MAC PDU, and generates the generated ID and MAC reception.
  • the SN is transmitted to the MAC SDU transmission unit 12.
  • the MAC reception SN indicating the order of reception in the MAC sublayer is incremented every time an uplink signal new transmission request is notified by a downlink signal. Therefore, even when the uplink radio state is poor and reception is not possible, it can be seen that the signal transmitted from the mobile station UE is advanced (in response to the next uplink signal transmission request).
  • FIG. 3 is a diagram illustrating a format example of the RLC PDU according to the first embodiment.
  • the RLC mode is set to UM (Unknown mode) (5-bit SN), UM (10-bit SN), or AM (Acknowledged Mode).
  • UM Unknown mode
  • AM Acknowledged Mode
  • FIG. 3A shows a format example of the RLC PDU when the RLC mode is UM (5-bit SN).
  • FIG. 3B shows a format example of the RLC PDU when the RLC mode is UM (10-bit SN).
  • FIG. 3C shows a format example of the RLC PDU when the RLC mode is AM. Note that the format of RLC PDU used in each mode is defined in 3GPP.
  • the error PDU discard unit 13 determines whether there is an error in the RLC PDU by checking each field of the RLC PDU. Below, some examples of determination in the error PDU discard unit 13 are shown.
  • the error PDU discard unit 13 refers to the LI field indicating the data length excluding the last data, and determines that the RLC PDU has an error when the value of the LI field is 0.
  • the error PDU discard unit 13 refers to the LI field indicating the Data length excluding the last Data, and the total value of the LI field value, the RLC header length, and the minimum Data size is the size of the RLC PDU. If it exceeds, it is determined that there is an error in the RLC PDU.
  • the minimum Data size is usually 1 byte.
  • the error PDU discard unit 13 refers to the LI field indicating the Data length excluding the last Data, and the sum of the LI field value, the RLC header length, and the maximum Data size is the size of the RLC PDU. If it is less than this, it is determined that the RLC PDU has an error.
  • the maximum Data size depends on the network setting value of the mobile station UE.
  • the error PDU discard unit 13 refers to the R1 field that is a reserved bit, and determines that the RLC PDU has an error when the value of the R1 field is not 0.
  • the error PDU discard unit 13 refers to the CPT field indicating the type of the RLC control PDU, and determines that the RLC PDU has an error when the value of the CPT field is not 0.
  • the error PDU discard unit 13 refers to the E field indicating whether the RLC header is continued, and determines that the RLC PDU has an error when the RLC header exceeds the size of the RLC PDU.
  • the error PDU discard unit 13 refers to the E1 field and the E2 field indicating whether the RLC header is continued, and determines that the RLC PDU has an error when the RLC header exceeds the size of the RLC PDU.
  • the error PDU discard unit 13 refers to the SN field indicating the order of RLC PDUs, and determines that there is an error in the RLC PDU when the value of the SN field has changed significantly compared to the MAC reception SN. When the difference between the SN field value and the MAC reception SN exceeds a predetermined threshold, it is determined that the SN field value has changed significantly compared to the MAC reception SN.
  • the error PDU discard unit 13 refers to the SN field indicating the order of the RLC PDU, and determines that the RLC PDU has an error when the value of the SN field is reversed compared to the MAC reception SN. That is, for example, when the MAC reception SN increases, but the value of the SN field decreases, it is determined that the order of the SN field value is reversed compared to the MAC reception SN.
  • the error PDU discard unit 13 refers to the ACK_SN field and the NACK_SN field indicating the reception state, and in consideration of the SN circulation, when a value of the NACK_SN field larger than the value of the ACK_SN field is set, the error PDU discarding unit 13 Determine that there is an error.
  • the error PDU discard unit 13 refers to the ACK_SN field and NACK_SN field indicating the reception state, and when the SN of an untransmitted RLC PDU is set in the value of the ACK_SN field or the value of the NACK_SN field, the error PDU discarding unit 13 Judge that there is.
  • the error PDU discard unit 13 refers to the ACK_SN field and the NACK_SN field indicating the reception state, and considers the circulation of the SN in the value of the ACK_SN field and the value of the NACK_SN field, and is delayed by half a cycle from the SN of the RLC PDU of the next transmission. If a value less than that is set, it is determined that there is an error in the RLC PDU.
  • the error PDU discard unit 13 refers to the NACK_SN field indicating the reception state, and when the SN value of the RLC PDU that has already been notified as ACK is set as the NACK_SN value, there is an error in the RLC PDU. Is determined.
  • the error PDU discard unit 13 refers to the NACK_SN field indicating the reception state, and determines that there is an error in the RLC PDU when the NACK_SN value is not set in ascending order when a plurality of NACK_SN values are notified. To do.
  • the error PDU discard unit 13 refers to the SOstart field and the SOend field indicating the NACK part, and if the RLC PDU part that has already been notified of ACK is set as NACK, the error PDU discarding unit 13 determines that there is an error in the RLC PDU. judge.
  • the error PDU discard unit 13 refers to the SOstart field and SOend field indicating the NACK part, and when a plurality of SOstart field values and SOend field values for the same NACK_SN are notified, the part is set redundantly.
  • the RLC PDU is determined to have an error.
  • the error PDU discard unit 13 refers to the SOstart field and SOend field indicating the NACK part, and when a plurality of SOstart field values and SOend field values for the same NACK_SN are notified, the SOPDU field value and the SOend field value When the values are not set in ascending order, it is determined that there is an error in the RLC PDU.
  • the error PDU discard unit 13 uses the SOstart field and SOend field indicating the NACK part to determine that there is an error in the RLC PDU when it does not match the delimiter transmitted by SOstart or SOend.
  • the error PDU discard unit 13 refers to the FI field indicating the continuity of the first and last Data fields.
  • the error PDU discard unit 13 refers to the FI field indicating the continuity of the first and last Data fields.
  • the error PDU discard unit 13 uses the SO field indicating the position of the AMD PDU of the AMD (Acknowledged Mode Data) PDU segment and the LSF field indicating the termination, and when the AMD PDU segment includes all the AMD PDUs, It is determined that there is an error in the PDU.
  • the error PDU discard unit 13 uses the SO field indicating the position of the AMD PDU in the AMD PDU segment, the LSF field indicating the end, and the size of the AMD PDU segment.
  • the LSF is 1, the end of the AMD PDU segment is the AMD PDU.
  • the error PDU discard unit 13 uses the SO field indicating the position of the AMD PDU of the AMD PDU segment, the LSF field indicating the end, and the size of the AMD PDU segment.
  • the LSF is 0, the end of the AMD PDU segment is the AMD PDU. When it coincides with the end, it is determined that the RLC PDU has an error.
  • the error PDU discard unit 13 uses the SO field indicating the position of the AMD PDU of the AMD PDU segment and the size of the AMD PDU segment, and when the end of the AMD PDU segment exceeds the end of the AMD PDU, Determine that there is an error.
  • the error PDU discard unit 13 considers the case where there is an error in the previous RLC PDU, determines that the current RLC PDU is an error, and notifies the mobile station UE of the same RLC PDU as an NACK. If the RLC PDU of the RLC SN of the current RLC SN is determined to be in error several times, it is determined that there is no error in the current RLC PDU.
  • the ACK notification of the previous RLC PDU may not be transmitted to the mobile station UE. Since the part recognized as ACK by the UE is discarded even if it is retransmitted, the current information is correct if the same information is received multiple times even if it does not match the delimiter sent by SOstart or SOend indicating the NACK part. It is determined as a thing.
  • the RLC PDU When there is an RLC PDU determined to have an error, the RLC PDU is discarded and is an ID for identifying a MAC PDU multiplexed in the RLC PDU determined to have an error, and the mobile station UE And the MAC reception SN indicating the reception order are notified to other error PDU discarding units 13 of other RLC sublayers that are processing other radio bearers.
  • the error PDU discard unit 13 that has received the ID identifying the MAC PDU having the error checks whether there is an RLC PDU to which the notified ID is added, and there is an RLC PDU to which the notified ID is added. If so, discard the RLC PDU.
  • the reception data storage processing unit 14 stores an error-free RLC PDU transmitted from the error PDU discarding unit 13 in the reception buffer, and performs an order correction process for correcting the order of the RLC PDU stored in the reception buffer.
  • the SDU restructuring unit 15 constructs the RLC SDU and transmits the constructed RLC SDU to the PDCP sublayer.
  • FIG. 4 is a flowchart for explaining an operation example (reception process) of the receiving apparatus shown in FIG.
  • the MAC PDU information transmission unit 11 transmits the ID for identifying the MAC PDU and the SN indicating the reception order to the MAC SDU transmission unit 12 (step S11).
  • the MAC SDU transmission unit 12 multiplexes (adds) the ID and SN to the MAC SDU (step S12).
  • the error PDU discard unit 13 detects an error in the RLC PDU (step S13). The error detection here can also be performed using at least one or more of the methods described above.
  • the error PDU discard unit 13 determines whether an error in the RLC PDU is detected (step S14). If it is determined that an error in the RLC PDU is detected (Yes in step S14), the error PDU discard unit 13 discards the RLC PDU in which the error is detected (step S15). Further, the error PDU discard unit 13 notifies the other error PDU discard unit 13 of the ID and SN added to the RLC PDU in which the error is detected (step S16).
  • step S ⁇ b> 17 the error PDU discard unit 13 determines whether the ID and SN added to the RLC PDU in which the error is detected have been notified from the other error PDU discard unit 13. When it is determined that the ID and SN are notified from the other error PDU discard unit 13 (Yes in step S17), the error PDU discard unit 13 detects an error from the other error PDU discard unit 13. The notification of the ID and SN added to the RLC PDU is received (step S18).
  • step S19 the error PDU discard unit 13 determines whether there is an RLC PDU to which the notified ID is added.
  • the error PDU discard unit 13 discards the RLC PDU to which the notified ID is added (step S20). ).
  • step S20 determines whether there is an RLC PDU to which the notified ID is added.
  • the received data storage processing unit 14 stores the error-free RLC PDU transmitted from the error PDU discard unit 13 in the reception buffer, and corrects the order of the RLC PDUs stored in the reception buffer. I do. If the RLC SDU can be constructed from the RLC PDU stored in the reception buffer, the SDU reconstruction unit 15 constructs the RLC SDU and transmits the constructed RLC SDU to the PDCP sublayer (step S22). As described above, according to the first embodiment, it is possible to prevent the construction of RLC SDUs using abnormal data by accurately determining and discarding RLC PDUs with errors, and the same applies to RLC control PDUs. Therefore, normal ARQ retransmission control can be performed.
  • the processing may be performed in the MAC sublayer.
  • RLC SN check in the RLC header is performed in the MAC sublayer.
  • the Data portion it is possible to perform error processing with higher accuracy. For example, an error can be detected by checking the continuity of the PDCP SN of the PDCP header included in the Data portion or by checking the value of a known bit.
  • the receiving device is not limited to the radio base station eNB and may be the mobile station UE. Specifically, this is a case where the mobile station UE receives a downlink signal from the radio base station eNB.
  • FIG. 5 is a block diagram illustrating a configuration example of the receiving device 20 according to the second embodiment of the present invention.
  • the reception device 20 stores a plurality of first protocol data units of a first layer provided for each of a plurality of radio bearers, and a second layer second layer that is a lower layer of the first layer A receiving device that receives data using a protocol data unit.
  • the receiving device 20 includes a grant unit 22 in the second layer, and a discard unit 24 in the first layer.
  • the assigning means 22 assigns specific information for specifying the second protocol data unit to the first protocol data unit stored in the second protocol data unit.
  • the discarding unit 24 refers to the specific information and is stored in the second protocol data unit that has stored the first protocol data unit in error. Discard the other first protocol data unit.
  • the first layer can be an RLC (radio link control) sublayer
  • the second layer can be a MAC (medium access control) sublayer.
  • the assigning unit 22 can assign a number indicating the order of reception of the second protocol data unit to the first protocol data unit. Then, the discarding unit 24 can determine whether or not there is an error in the first protocol data unit with reference to the number. In the second embodiment described above, the discarding unit 24 is provided corresponding to each of the plurality of radio bearers, and when there is an error in the first protocol data unit, the first protocol data having an error.
  • the specific information given to the unit can be notified to other discarding means.
  • the discarding unit 24 can discard the first protocol data unit to which the notified specific information is given when the specific information is notified from another discarding unit.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Communication Control (AREA)

Abstract

L'invention porte sur un dispositif de réception qui peut rejeter de façon plus fiable les données erronées et qui peut recevoir des données exactes également de façon plus fiable. L'invention porte précisément sur un dispositif de réception qui reçoit des données à l'aide d'une seconde unité de données de protocole d'une seconde couche servant de couche inférieure pour une première couche, dans laquelle une pluralité de premières unités de données de protocole de la première couche fournies pour chaque pluralité de porteuses radio sont mémorisées. Le dispositif de réception comporte un moyen de communication pour conférer à la seconde couche des informations d'identification qui identifient la seconde unité de données de protocole aux premières unités de données de protocole mémorisées dans la seconde unité de données de protocole, et un moyen de rejet, dans la première couche, lorsqu'une erreur a été détectée dans une première unité de données de protocole prédéterminée, pour rejeter les autres premières unités de données de protocole mémorisées dans la seconde unité de données de protocole dans laquelle la première unité de données de protocole erronée est mémorisée en se référant aux informations d'identification.
PCT/JP2010/057513 2009-04-27 2010-04-21 Dispositif de réception, procédé de réception et programme Ceased WO2010126068A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US13/262,958 US8503478B2 (en) 2009-04-27 2010-04-21 Receiving apparatus, receiving method and program thereof
JP2011511424A JP5648631B2 (ja) 2009-04-27 2010-04-21 受信装置、受信方法およびプログラム
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US8503478B2 (en) 2013-08-06
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